Abstract： ASME B18.2.1:2010 pdf download.Square, Hex, HeavyHex, and Askew HeadBolts and Hex, HeavyHex, Hex Flange, Lobed Head, and LagScrews (Inch Series). In 1991, it was recognized that 1118.2.1 required extensive revision to better meet the needs...

ASME B18.2.1:2010 pdf download.Square, Hex, HeavyHex, and Askew HeadBolts and Hex, HeavyHex, Hex Flange, Lobed Head, and LagScrews (Inch Series).

In 1991, it was recognized that 1118.2.1 required extensive revision to better meet the needs of conformance with Public Law 101-592. Included in these considerations were improved definition of a lull body versus a reduced body and those dimensions that should be certified to ensure product fit, form, and function. Other dimensions given for each product would only be examined in the

event of a dispute. Also, the term “finished hex bolt.” which is today’s cap screw, should be dropped. Additiona1h a weight

table has been included to assist users.

Furthermore, it was felt that the heavy he stn,ctural bolt, heavy hex nut, hardened steel washers, and compressible washer-type

direct tension indicators should be included In a new standard for fasteners intended for use in structural applications. For this reason, the heavy hex structural bolt was removed 1mm this Standard, The new table for maximum grip gaging lengths and minimum

body lengths for cap screws and heavy hex screws was induded for the first time in the 1996 edition to assist users and is similar to the pattern used for metric bolts and screws.

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